Yo guys. I'm literally pulling my hair out trying to find the root cause of this issue.

I recently built a new box based around an i7 3770 and HD4000 graphics. At complete random times the system locks up with awful graphical distortions. The Intel support ticket (with screenshot) is here:


Any indication as where I can start to debug this thing is helpful. I've already replaced the motherboard and cpu via RMA. The RAM checks out over 3 full iterations of memtest.